Tensen



(No Model.)

0. A. CHRISTENSEN.

. CENTRIFUGAL PUMP.

ATTORNEYS.

. To all whom it may concern:

' NITED STATES PATENT OFFIcE.

CENTRIFUGAL PUMP.

SPECIFICATION forming part of Letters Patent No. 288,409, dated November 13, 1883.

Application filed March 8, 1883. No model.)

Be it known that I, GHRISTOFFER A. CHRIs- TENSEN, of Willamina, in the county of Yam Hill and State of Oregon, have inventeda new and Improved Centrifugal Pump, of which the following is a full, clear, and exact description. i

The object of my invention is to provide a pump of simple constructionand variable capacity for any requirements, and onewhich shall lift sand, gravel, and other solid or pulpy substances Without obstruction, and which maybe worked in a manner to utilize the applied power directly and to the best advantage.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

'Figure l is a broken central longitudinal sectional elevation of my improved centrifugal pump as adapted for application of the driving-power to a central spindle fixed in the tube. Fig. 2 is a like view of the pump arranged to be driven by application of power directly to the pump-tube, and Fig.' 3 is a horizontal cross-section on lines was of Figs; 1

and 2.

Referring' first andmore particularly to Fig. 1 of the drawings, A represents the tubular body or shell of the pump, in which I secure spider-bearings B for support. of a shaft or spindle, 0, about centrally in tube A, with the lower end of the spindle projecting through the inlet-aperture a of the tube A, formed by theannular inwardly-projecting flange b, the spindle being stepped in a base-block, c, or

other suitable support, at the bottom of the bore of the earth or rock D, made to receive the tube. The spindle 0 projects at the top above the tube A, where it carries a gearwheel, E, or suitable belt-.pulley, for application of power to the tube to revolve it in its bearings, and on spindle O, to draw in the substance by centrifugal action through the aperture a, and lift it to the surface or any desired point of discharge. In the modified construction of Fig. 2 the'spindle G is made short,

and held firmly in spider-bearings B at or near the bottom of the tube, which is formed with or has attached to its upper end the gearwheel or pulley E, to which the power is directly applied from any suitable motor. In both cases the action of the pump is the same, and a tube of a given size will discharge variable volumes of fluid by changing the speed of its rotation, and by the use of pump-tubes of different sizes, with proper provision for their revolution, any desired volume of water or pulp, 820., may be lifted and discharged.

The mode of operation is as follows: Power being applied to the spur-wheel at the top of the tube A, the latter is rotated, and by the well-known centrifugal action the water, with its sediment, is forced up the tube and out of' the top thereof.

A special advantage of my pump is its freedom from choking or clogging by sand, gravel, or small stones, and it is capable, also, of lifting these solid substances in greater or less quantities, making the pump very desirable foruse in mining operations, or in the moving or elevation of pulpy masses in manufacturing establishments, the pump acting at all times with a minimum of friction, which in'-. sures a saving of power and efl'ectivemesults muse.

I do not limit myself to any particular method of sinking the tube in the earth to the water-level, or the manner of its support for rotation in varying situations; and the tube may be set either in vertical position or at any angle or inclination required by the nature'of the work to be done.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with the tube A, flanged at b and apertured at a, of the spindle or shaft 0, fixed to spider-bearings B, rigidly secured to the interior of tube A, substantially as shown and described.

2. The combination, with the tube A, having flange b and inlet-aperture a, of the shaft 0 and means, E, for application of power to rotate the tube, substantially as shown and described; y 4 OHRISTOFFER A. CHRISTENSEN Witnesses: I

p O. E. MOMILLEN, A. J. MARTIN. 

